Abstract
Among the various multilevel inverters, cascaded multi level inverters are widely known for their many advantages like modularized circuit, requirement of less number of components as compared to other multilevel inverters and possibility of switching redundancy for inner voltage levels. For power conditioning applications a cascaded multi level inverter with capacitors can be used instead of dc sources. But the voltage balancing of dc capacitors is a critical problem. This paper presents an algorithm by which the capacitor voltages can be balanced significantly. The charging and discharging process of capacitor is dependent on the width of the output pulses. A mathematical model of H- bridge inverter based power conditioner is developed. Simulation has been carried out using MATLAB/ SIMULINK and the results are presented.
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